Brake mechanism.



G. C. McNEIL.

BRAKE MECHANISM.

APPLICATION FILED JULY 29. 1912.

1, 1 34,474. Patented Apr. 6, 1915.

FBI-

GEORGE C. MCNEIL, OF

ETHRIDGE, TENNESSEE, ASSIGNOR OF ONE-HALF TO E. C. MASSEY, OF ETHRIDGE,TENNESSEE.

BRAKE MECHANISM.

Application filed July 29, 1912.

To all whom it may concern Be it known that I, GEORGE C. MGNEIL, acitizen of the United States, residing at Ethridge, in the county ofLawrence, State of Tennessee, have invented certain new and usefulImprovements in Brake Mechanism; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

This invention relates to brake mechanisms and has for its object theprovision of a novel brake mechanism particularly adapted forcontrolling and stopping the move ment of a shaft.

With the above and other objects in view, such as simplicity,efficiency, durability in service and the general improvement of theart, my invention consists in the novel construction and arrangement ofparts as will be hereinafter more fully described and claimed, andillustrated in the accompanying drawings, in which- Figure 1 is a sideelevation of my brake mechanism applied to a driven shaft and Fig. 2 isa top plan view thereof.

Referring more particularly to the drawings. the numeral 5 designates adriven shaft which may be a part of any form of device, as it forms nopart of the present invention. My invention consists in the provision ofmeans for controlling the speed of rotation of said shaft, and comprisesparts to be described which may be mounted upon any suitable frame 6,such as shown, disposed adjacent the shaft 5.

A vertically disposed crank shaft 7 has its ends ournaled through theframe 6 and includes a horizontally swinging crank 8 upon which ispivoted intermediate its ends a brake lever 9, having its forward end 10curved inwardly toward the shaft 5. A brake strap 11 is trained aroundthe shaft 5 and has its ends connected to the lever 9 on opposite sidesof its point of connection with the crank 8. A hand lever 12 isfulcrumed upon the frame and carries a pawl 13 adapted for engagementwith the teeth of a ratchet 14. The hand lever 12 is connected with theend of the brake lever 9 Specification of Letters Patent.

Patented Apr. 6, 1915.

Serial No. 712,168.

opposite the curved end 10 thereof by means of a link 15.

From the foregoing description and a study of the drawings, it will beobserved that when the hand lever 12 is pulled back wardly away from theshaft 5, the link 15 will cause the brake lever 9 to swing horizontallyso as to urge the curved end 10 thereof inwardly against the strap 11and thereby tension the strap 11 on the shaft 5. Suflicient force may beexerted upon this strap to quickly stop the rotation of the shaft.

The provision of the ratchet and pawl associated with the hand lever 12enables the operator to apply a certain degree of tension upon the strap11 and maintain such desired tension for diminishing the speed of theshaft without entirely stopping the shaft.

It will thus be seen that I have provided a brake mechanism for drivenshafts which is simple, efficient and positive in operation and whichcomprises a minimum number of parts.

What is claimed is:

1. In combination with a driven shaft, means for stopping the rotationof said shaft including a manually operable brake lever, a strapembracing said shaft and connected at both ends to said lever, a curvedterminal portion formed on said lever and means for rocking said leverwhereby to impinge said terminal portion against said strap with aresultant frictional engagement of said strap with said shaft sufficientto stop rotation of said shaft.

2. In combination with a driven shaft, a brake mechanism comprising abrake lever having one end refleXly bent, said lever being pivotedintermediate its ends adjacent said driven shaft, a strap trained aboutsaid shaft and having its ends connected with said lever upon oppositesides of said pivot point and manual means for rocking said lever toengage said refieXly bent portion against said strap with a resultantfrictional engagement of said strap with said shaft.

3. In combination with a driven shaft, a brake mechanism comprising alever pivoted intermediate its ends adjacent said shaft and adapted toswing at right angles to said said laterally ourved portion against saidshaft, a laterally curved portion formed on strap. 10 7 one end of saidlever, a straptrained about In testimony whereof, I afiix my signasaldshaft and havlng 1ts ends connected ture, 1n presence of tWo wltnesses.

Wltll said lever on opposite sides of said ,7 .:.'GEORGE C. MONEIL'pivot point, a pivoted hand lever and a link Witnesses; connecting saidhand lever Withsaid brake S A. WILKINSON, lever for swinging said brakelever to force S. L. LUTTS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D, 0.. i 1

